geography
DESCRIPTION
Geography. What is a GIS?. GIS stands for Geographic Information System A tool people can use to map and analyze geographic data Organizes data by where it occurs. Why is Geography Important?. Our activities and decisions involve location in some way Examples: - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Geography](https://reader034.vdocuments.net/reader034/viewer/2022051518/56815f55550346895dce3569/html5/thumbnails/1.jpg)
Geography
![Page 2: Geography](https://reader034.vdocuments.net/reader034/viewer/2022051518/56815f55550346895dce3569/html5/thumbnails/2.jpg)
What is a GIS?
• GIS stands for Geographic Information System
• A tool people can use to map and analyze geographic data
• Organizes data by where it occurs
![Page 3: Geography](https://reader034.vdocuments.net/reader034/viewer/2022051518/56815f55550346895dce3569/html5/thumbnails/3.jpg)
Why is Geography Important?
• Our activities and decisions involve location in some way
• Examples: – Where to buy bread on the way home from work– Where to build new roads or hospitals
![Page 4: Geography](https://reader034.vdocuments.net/reader034/viewer/2022051518/56815f55550346895dce3569/html5/thumbnails/4.jpg)
What is Remote Sensing?
• Geographers use pictures taken from satellites and sensors to help solve everyday problems.– Examples include aerial
imagery, infrared (IR) and microwave sensors, and sonar
![Page 5: Geography](https://reader034.vdocuments.net/reader034/viewer/2022051518/56815f55550346895dce3569/html5/thumbnails/5.jpg)
What agencies might use remote sensing?
• Weather forecasters• Foresters• Agriculture• Ocean researchers• Biologists• Polar researchers
Provided by the SeaWiFS Project, NASA/Goddard Space Flight Center, and ORBIMAGE
![Page 6: Geography](https://reader034.vdocuments.net/reader034/viewer/2022051518/56815f55550346895dce3569/html5/thumbnails/6.jpg)
How can we use remote sensing?Some of the ways (but not all!)
we can use remote sensing:• Weather• Land use• Populations of organisms in
the ocean• Monitoring sea ice
![Page 7: Geography](https://reader034.vdocuments.net/reader034/viewer/2022051518/56815f55550346895dce3569/html5/thumbnails/7.jpg)
An example
• One way that remote sensing can be used is in tracking land use changes through time.
![Page 8: Geography](https://reader034.vdocuments.net/reader034/viewer/2022051518/56815f55550346895dce3569/html5/thumbnails/8.jpg)
• Remote sensing can also be used to detect vegetation and land types and even natural disasters.
• When using an infrared (IR) sensor, vegetation appears bright red and is easy to spot.
• IR sensors also allow tornado tracks to be easily seen.
LANDSAT ETM+ IR composite image of
Delaware Inland Bays
Photo from NASA Science News; ASTER sensor